Ohaeles seltman



UNITED STATES PATENT OFFICE.

CHARLES SELTMAN, OF VASI-IINGTON, DISTRICT OF COLUMBIA.

SHUTTER-OPERATOR.

Specification of Letters Patent No. 28,906, dated June 26, 1860.

To all whom "it may concern:

Be it known that I, CHARLES SELTMAN, of the city of Washington and District of Columbia, have invented a new and Improved Apparatus for Opening, Closing, and Fastening Window Shutters or Blinds; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings and letters of reference marked thereon.

Figure II is a horizontal section of Fig. I, through the line 1 2. Fig. I, is a front View of the model with the shutter open. Fig. III, is a vertical section, through the line 3 4, Fig. I.

In the accompanying drawings, A, A, represent the window frame- B the sill of the frame; C, the whole shutter; D, the pinion, working into the rack, 0,' E, the lower hinge of the shutter; E, the upper hinge of same; F, metal boxing or plating, inclosing the working apparatus; a, the shank; b, the wooden handle; c, the rack, or series of indented teeth in the shank a; d, the plate cog, intended as a guide when removing or replacing the shutter; f, f, the notches in the shank a, used as a part of the fastening apparatus; 71 a bar, firmly attached to the hinge E; 1', a groove in bar It, made to receive the tongue lc; p, opening in metal boxing F, allowing the backward and forward play of the grooved bar it; z', a spring; 7c, a wedge shaped tongue; u, posterior plating.

To enable others skilled in the art to make and use my invention I will proceed to describe its construction and operation.

The whole apparatus exclusive of the upper hinge, is cast in three parts, the brass boxing F, and the lower part of the hinge E, making the first piece; the shank a, Fig. II, rack c, and tongue 2c, the second; and the crank hinge E, the groovedbar 7L, pinion D and plate cog fl, making the third; although, the pinion D can be cast separate. Constructed in this way, this apparatus can be made cheap, the pieces are more easily fitted into their places, and any one of the component parts of one size of thel apparatus will take the place of an injured one of th`e same class. The plate cog, d, is merely intended as a guide in removing and replacing the window shutter.

The hinges which I employ, I have given the naine of crank hinges, from the fact that the two portions forming the hinge are crank shaped.

The advantages of this hinge over any other with which I am acquainted are twofold: First, when the shutter or blind is open, it hangs outside of the line of the window frame, as shown in Fig. I, in which position it does not exclude any light. Second, when the shutter is closed, the hinge presents a barrier of two metal plates, to any tampering with the inside machinery, as shown by the red lines in Fig. II, by m. The rack, c, is old, as is also the pinion D and shank a. The shank a, Ahas a wooden handle b, which also serves as a convenient place for fastening window curtains -to. The notches f, f, g, Fig. II, hold the shutter in its place, when opened or closed.

The operation is as follows: Fastened to the inside of the boxing F, is a spring i,

`which presses the shank a, toward the opposite side of the plating u, and when the notches are brought opposite their places, the spring holds them tight against the plating u. IVhen the shutter is open, it is held in its position by the notch j, Fig. II, and the spring c'. I/Vhen closed, the shank a, and rack c, are entirely detached from the pinion D, by drawing the shank a into its proper place, where it is held by the notch Fig. II; shown by f, Fig. II, in red lines; making it impossible to withdraw the shank from the outside. At the same time the bar 7L, grooved in the shape of a wedge, shown at 7, which has passed through the opening p, Fig. III, in the metal boxing, is in its place, as shown by e, Fig. II in red lines. In pulling the shank a, to its position, the wedge shaped tongue 7c, Figs. II and III, is drawn into the groove 1. IVith the tongue 7c, in its place and the inner fastening f, the shutter itself would break before the fastenings could -give way.

That I claim as new, and desire to secure by Letters Patent, is:

The combination and arrangement of the shank 0;, notches f, f, cog plate d, spring c', pinion D, rack c, wedge shaped tongue lo, correspondingly grooved bar h, crank hinges E, Ff, and the metal boxing F; when used in the manner and for the purposes specified.

CHARLES SELTMAN. Vitnesses:

WARREN Gr. DAVIS, GILBERT B. ToWLns. 

